Re: [PATCH v4 2/2] i2c: designware: Add AMD PSP I2C bus support

From: Jarkko Nikula
Date: Thu Feb 10 2022 - 09:43:56 EST


On 2/10/22 10:18, Jan Dąbroś wrote:
śr., 9 lut 2022 o 16:28 Andy Shevchenko
<andriy.shevchenko@xxxxxxxxxxxxxxx> napisał(a):

On Tue, Feb 08, 2022 at 03:12:18PM +0100, Jan Dabros wrote:

...

I have noticed code duplication.

+ status = psp_send_i2c_req(PSP_I2C_REQ_ACQUIRE);
+ if (status) {
+ if (status == -ETIMEDOUT)
+ dev_err(psp_i2c_dev, "Timed out waiting for PSP to release I2C bus\n");
+ else
+ dev_err(psp_i2c_dev, "PSP communication error\n");
+
+ dev_err(psp_i2c_dev, "Assume i2c bus is for exclusive host usage\n");
+ psp_i2c_mbox_fail = true;
+ goto cleanup;
+ }

+ /* Send a release command to PSP */
+ status = psp_send_i2c_req(PSP_I2C_REQ_RELEASE);
+ if (status) {
+ if (status == -ETIMEDOUT)
+ dev_err(psp_i2c_dev, "Timed out waiting for PSP to acquire I2C bus\n");
+ else
+ dev_err(psp_i2c_dev, "PSP communication error\n");
+
+ dev_err(psp_i2c_dev, "Assume i2c bus is for exclusive host usage\n");
+ psp_i2c_mbox_fail = true;
+ goto cleanup;
+ }

If you are going to update the series, consider to introduce a common helper.
Otherwise, consider a follow up.

Thanks for your comment. Since Jarkko is running some long-lasting
tests with v4 patchset, I would like to keep this as is for now (and
make a follow up commit). If there will be some additional comments
for v4 from him and will spin v5 - I will introduce a common helper
function then.

Test run fine overnight, although I wasn't expecting this breaking Baytrail since patch is practically touching only semaphore detection at probe time on Baytrail. I'm up to you would you address Andy's comments as a follow up or as v5.

Acked-by: Jarkko Nikula <jarkko.nikula@xxxxxxxxxxxxxxx>
Tested-by: Jarkko Nikula <jarkko.nikula@xxxxxxxxxxxxxxx>